When we bailed, the South Vietnamese that were sympathetic to the U.S. were treated very inhumanely by the Viet Cong. Many were tortured and executed.
The saying goes, "If we fail to remember history we are doomed to repeat it."
This is food for thought about Iraq whether you think we should be there or not. The Iraqi people will suffer greatly If we leave now.

Remember this famous photo? All those people on that ladder "were" South Vietnamese trying to get on the last flight out of VietNam. What would drive people to leave their homeland with nothing but the clothes on their backs?
They knew what fate awaited them if they remained in VietNam.